Twisted string actuator

US20220049760A1Pending Publication Date: 2022-02-17CHUNG ANG UNIV IND ACADEMIC COOP FOUND
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
CHUNG ANG UNIV IND ACADEMIC COOP FOUND
Publication Date
2022-02-17

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Abstract

The present invention relates to a twisted string actuator. The present invention may comprise: a drive source; driving parts for receiving power from the driving source; driven parts installed in conjunction with the driving parts and receiving power; strings coupled to the ends of the driving parts and the driven parts so as to be twisted or untwisted, and a driving compensation part installed at the ends of the strings to compensate for uneven actuation of each of the strings.
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Description

TECHNICAL FIELD

[0001] The present invention relates to a twisted string actuator, and more particularly, to a twisted string actuator using a twisted string actuation mechanism.BACKGROUND ART

[0002] Twisted string actuation (TSA), which replaces the existing gear, has actively been researched as a technology of safely driving a robot. The TSA is inherently safe because the TSA uses light and inexpensive strings and has flexibility, and many studies on the TSA are being conducted as a driving technology that can be used more safely than a motor in a machine in which humans and robots collaborate.

[0003] The design concept of the existing twisted string actuator is generally to increase the length of the string or reduce the radius of the string in order to obtain a high reduction ratio. However, this design concept has limitations in that, when the length of the string is increased, the volume of the actuator is increased, and when the radius of the string is reduced, only a limited desig...

Claims

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